CN202917415U - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
- Publication number
- CN202917415U CN202917415U CN 201220540175 CN201220540175U CN202917415U CN 202917415 U CN202917415 U CN 202917415U CN 201220540175 CN201220540175 CN 201220540175 CN 201220540175 U CN201220540175 U CN 201220540175U CN 202917415 U CN202917415 U CN 202917415U
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- Prior art keywords
- contact
- static
- circuit breaker
- contact system
- arc
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Abstract
The utility model discloses a circuit breaker, which comprises a static contact system, a dynamic contact system and an arc extinguishing chamber made up of the static contact system and the dynamic contact system, wherein the static contact system comprises a static main contact and a static arc contact, and is fixed on one end of a tank body via an insulating stand; the dynamic contact system comprises a dynamic main contact and a dynamic arc contact, and is fixed on the other end of the tank body via the insulating stand; and the static main contact is fitted with the dynamic main contact, and the static arc contact is fitted with the dynamic arc contact. The circuit breaker disclosed by the utility model has the advantages of simple structure, good breaking effect, low needed operation power, easy processing and manufacturing, low production cost, compact and beautiful appearance, easy installation, easy use and maintenance and the like.
Description
Technical field
The utility model relates to the electrical equipment in a kind of high-tension circuit, especially relates to the circuit breaker in a kind of high-tension circuit.
Background technology
On the market, be used for the circuit breaker of high-tension circuit now, generally adopt the air pressing type sulfur hexafluoride breaker; Not only complex structure, volume are large for this circuit breaker, noise also large, operand power is higher, and maintenance difficult, service behaviour is unstable.
Summary of the invention
The breaker structure that is used in the market high-tension circuit is complicated, volume is large, high in cost of production is not enough in order to solve, and the applicant improves and invented a kind of circuit breaker through further investigation; Adopt self-energy arc-extinguishing chamber, have simple in structure, the advantage such as reliability is high, and cost is low, and operand power is little.
A kind of circuit breaker of the present utility model, its technical scheme is:
Comprise static contact system, movable contact system, reach the arc control device that consisted of by described static contact system and movable contact system; Wherein, described static contact system comprises quiet main contact, static arc contact, and is fixed on by insulation pad on the end of tank body; Described movable contact system comprises moving main contact, moving arcing contact, and is fixed on by insulation pad on the other end of described tank body; Described quiet main contact and described moving main contact, described static arc contact and described moving arcing contact adapt.
Wherein, described quiet main contact, static arc contact are connected with insulation pad by conductor;
Wherein, described movable contact system also comprises spout, thermal expansion cylinder, return-air valve; Described spout is positioned at described moving arcing contact front end;
Wherein, described movable contact system also comprises unidirectional valve, and described unidirectional valve is positioned at the thermal expansion cylinder, places the front end of return-air valve;
And it is inner that described spout, moving arcing contact, thermal expansion cylinder, unidirectional valve, return-air valve all are arranged on moving main contact; Constitute the thermal expansion cylinder between described moving main contact, moving arcing contact and the unidirectional valve;
Wherein, described movable contact system passes described insulation pad inside and links to each other with connecting lever in the transmission case by insulated tension pole; Operating mechanism rotates by connecting lever in the connecting rod drive, thereby drives the breaking-closing operating of insulated tension pole and movable contact system realization and static contact system.
Wherein, described operating mechanism is spring operating mechanism;
Wherein, also comprise support, described tank body places on the described support.
By technique scheme, can consist of the core of a kind of circuit breaker of the utility model.The utility model of consisting of of technical scheme thus, its beneficial effect is: at first simple in structure, it is low to cut-off effective, required operand power; Have again, simple in structure because of it, so be easy to processing and manufacturing, reduced cost; And external form is compact, attractive in appearance, is easy to install, uses, keeps in repair.
Description of drawings
Fig. 1 is a kind of circuit breaker off-state of the utility model structure chart.
Fig. 2 is a kind of breaker closing structure graph of the utility model.
Fig. 3 is that a kind of circuit breaker of the utility model disconnects process intermediateness structure chart.
Fig. 4 is a kind of circuit breaker shape assumption diagram of the utility model.
Embodiment
Be described in detail below in conjunction with the operating state of accompanying drawing to a kind of circuit breaker of the utility model:
As shown in Figure 1, a kind of circuit breaker of the present utility model comprises static contact system 21 and movable contact system 22, reaches the arc control device 20 that are made of described static contact system 21 and movable contact system 22; Described static contact system 21 is fixed on by insulation pad 11 on the end of tank body 16, and it is comprised of quiet main contact 3, static arc contact 1; Wherein quiet main contact 3, static arc contact 1 are connected with insulation pad 11 by conductor 15; Described movable contact system 22 is fixed on by insulation pad 12 on the other end of tank body 16, and it is comprised of spout 2, moving main contact 5, moving arcing contact 4, thermal expansion cylinder 17, unidirectional valve 6, return-air valve 7, and wherein said spout 2 is positioned at described moving arcing contact 4 front ends; Described unidirectional valve 6 is positioned at thermal expansion cylinder 17, places the front end of return-air valve 7; Described spout 2 and moving arcing contact 4, thermal expansion cylinder 17, unidirectional valve 6, return-air valve 7 all are arranged on moving main contact 5 inside; And, constitute thermal expansion cylinder 17 between described moving main contact 5, moving arcing contact 4 and the unidirectional valve 6; Described quiet main contact 3 adapts with described moving arcing contact 4 with described moving main contact 5, described static arc contact 1, realizes the breaking-closing operating of a kind of circuit breaker of the utility model with this; Movable contact system 22 is by insulated tension pole 18, passing insulation pad 12 inside links to each other with transmission case 19 interior connecting levers 13, operating mechanism 9 rotates by connecting lever 13 in connecting rod 14 drives, thereby drive insulated tension pole 18 and movable contact system 22 are realized and the breaking-closing operating of static contact system 21; Described operating mechanism 9 is spring operating mechanisms; A kind of circuit breaker of the present utility model also comprises support 10, and described tank body 16 places on the described support 10.
Its specific works process is as follows:
As shown in Figure 1: the first step of sub-switching operation is separated by the main conductive circuit that quiet main contact 3 and moving main contact 5 form.At this moment, static arc contact 1 and moving arcing contact 4 still are in closure state, thereby on current transfer to two arcing contact, see Fig. 3.
In process subsequently, two arcing contacts be static arc contact 1 and moving arcing contact 4 under the drive of operating mechanism 9, open formation electric arc.Simultaneously, because moving main contact 5 moves right, sulfur hexafluoride gas between heat of compression expansion cylinder 17 and the return-air valve 7, so that sulfur hexafluoride gas moves to the opposite direction that movable contact system 22 moves, enter thermal expansion cylinder 17 through unidirectional valve 6, pass through again the gap of moving arcing contact 4 and spout 2, thereby carry out the arc blow-out extinguish arcs.
When cut-offfing large short circuit current, sulfur hexafluoride gas around the static arc contact 1 is heated by the energy of electric arc, thereby the sulfur hexafluoride gas pressure in the thermal expansion cylinder 17 is raise, and the gas in the thermal expansion cylinder 17 blows to spout 2 by the gap of moving arcing contact 4 and spout 2; When current zero-crossing point, extinguish arcs.Unidirectional valve 6 prevention gases at high pressure in the thermal expansion cylinder 17 enter the air chamber between thermal expansion cylinder 17 and the return-air valve 7.
When cut-offfing little electric current, only move right by moving main contact 4, the sulfur hexafluoride gas between heat of compression expansion cylinder 17 and the return-air valve 7 enters thermal expansion cylinder 17 through unidirectional valve 6, pass through again the gap of moving arcing contact 4 and spout 2, carry out the purpose that arc blow-out just can reach extinguish arcs.
A kind of circuit breaker of the utility model adopts the self extinguishing type arc quenching principle.Thermal expansion cylinder 17 is to be communicated with the vital part that pressure transforms between two Room with unidirectional valve 6 between the return-air valve 7.In air pressing type structure in the past, unidirectional valve 6 often adopts duralumin plate, and is lightweight, but not anti-burning is yielding; If the employing corrosion resistant plate, anti-burning, but Heavy Weight, slow motion also produces the temperature distortion that internal stress causes easily.Therefore in self-energy arc-extinguishing chamber, adopted a kind of alloy material, it has lightweight, and the characteristics of indeformable and anti-burning preferably resolve the deficiency of above-mentioned bi-material; Return-air valve 7 in the utility model, can be opened during to left movement at moving main contact 4, sucks the sulfur hexafluoride gas in the arc control device 20, to reach the balance between air chamber.
Be understandable that above execution mode only is the illustrative embodiments that adopts for principle of the present utility model is described, yet the utility model is not limited to this; For those skilled in the art; all for reaching the purpose of this utility model; realize function of the present utility model; in the situation that does not break away from the utility model spirit and essence; can make various modification and improvement to each technical characterictics of technical solutions of the utility model and connected mode thereof etc.; these modification and improvement also are considered as content of the present utility model, belong to protection range of the present utility model.
Claims (8)
1. a circuit breaker is characterized in that, comprises static contact system (21) and movable contact system (22) and the arc control device (20) that are made of described static contact system (21) and movable contact system (22); Wherein, described static contact system (21) comprises quiet main contact (3), static arc contact (1), and is fixed on by insulation pad (11) on the end of tank body (16); Described movable contact system (22) comprises moving main contact (5), moving arcing contact (4), and is fixed on the other end of described tank body (16) by insulation pad (12); Described quiet main contact (3) adapts with described moving arcing contact (4) with described moving main contact (5), described static arc contact (1).
2. a kind of circuit breaker as claimed in claim 1 is characterized in that described quiet main contact (3), static arc contact (1) are connected with insulation pad (11) by conductor (15).
3. a kind of circuit breaker as claimed in claim 1 is characterized in that described movable contact system (22) also comprises spout (2), thermal expansion cylinder (17), return-air valve (7); Described spout (2) is positioned at described moving arcing contact (4) front end.
4. a kind of circuit breaker as claimed in claim 3 is characterized in that described movable contact system (22) also comprises unidirectional valve (6), and described unidirectional valve (6) is positioned at thermal expansion cylinder (17), places the front end of return-air valve (7).
5. a kind of circuit breaker as claimed in claim 4 is characterized in that described spout (2), moving arcing contact (4), thermal expansion cylinder (17), unidirectional valve (6), return-air valve (7) all are arranged on moving main contact (5) inside; Constitute thermal expansion cylinder (17) between described moving main contact (5), moving arcing contact (4) and the unidirectional valve (6).
6. a kind of circuit breaker as claimed in claim 1 is characterized in that described movable contact system (22) by insulated tension pole (18), passes described insulation pad (12) inside and links to each other with the interior connecting lever of transmission case (19) (13); Operating mechanism (9) passes through connecting rod (14) and drives interior connecting lever (13), thereby drives the breaking-closing operating of insulated tension pole (18) and movable contact system (22) realization and static contact system (21).
7. a kind of circuit breaker as claimed in claim 6 is characterized in that described operating mechanism (9) is spring operating mechanism.
8. a kind of circuit breaker as claimed in claim 1 characterized by further comprising support (10), and described tank body (16) places on the described support (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220540175 CN202917415U (en) | 2012-10-22 | 2012-10-22 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220540175 CN202917415U (en) | 2012-10-22 | 2012-10-22 | Circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202917415U true CN202917415U (en) | 2013-05-01 |
Family
ID=48165701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220540175 Expired - Lifetime CN202917415U (en) | 2012-10-22 | 2012-10-22 | Circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202917415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616376A (en) * | 2018-12-25 | 2019-04-12 | 江苏省如高高压电器有限公司 | A kind of arc quenching chamber structure of 72.5KV pot type AC circuit breaker |
-
2012
- 2012-10-22 CN CN 201220540175 patent/CN202917415U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109616376A (en) * | 2018-12-25 | 2019-04-12 | 江苏省如高高压电器有限公司 | A kind of arc quenching chamber structure of 72.5KV pot type AC circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |
|
| CX01 | Expiry of patent term |